Daytona USA graphics problems

mgreen

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So I have not found much in the regards of this issue. Please help me.

If I turn on the machine and leave it on the attract after about 3 minutes it goes black screen

If raced on beginner there are no issues, if raced on intermediate at some point the track and stand disappear and your car is in the clouds.

I cannot select the expert track, sensitivity not correct or an unlock?
 
Odd question... Is the game sharing a circuit with another game? My Daytona 2 does very similar things if it's on an outlet with a few other games.
 
Nope no other games but the garage did have a lot on the circuit in the form of TV, lights, and heater. I installed it for someone else that purchased the game. I saw another post about a transformer causing some graphics loss during game play but that just seems kind of odd.
 
voltages.

our Daytonas at work obviously get the shit pounded out of them. over time, you have to test the voltages and adjust accordingly. you can't really meter at the roms, so you have to pick one of the small 74 chips instead.. and it's risky as hell.

I metered ours to 5.10V at said input chips. you can't go based on what the voltage is at the power supply or even the filter board, there's just too much power loss along the way to accurately measure it.

if the voltage goes too low, the game can black out, or certain graphical elements will be missing. if you want to take a quick and easy route, follow the wiring from the power supply to the small board it plugs into and test at the yellow (+5, yellow on Sega stuff) and white (ground, ground is white in Sega land lol) and just turn it up about 0.1 V and see if the problem disappears.

I've never heard of the "other games on the circuit" thing, as that's exactly how all our games are at work.
 
If I turn on the machine and leave it on the attract after about 3 minutes it goes black screen

If raced on beginner there are no issues, if raced on intermediate at some point the track and stand disappear and your car is in the clouds.

I cannot select the expert track, sensitivity not correct or an unlock?

there's no such unlock for expert track. it might be your steering set up is not correct.

at some point the track and stand disappear. like mecha said, check voltages first. if they're okay, then it most likely one/more of the RAM broken in cpu or video pcb (i don't remember which).
 
voltages.

our Daytonas at work obviously get the shit pounded out of them. over time, you have to test the voltages and adjust accordingly. you can't really meter at the roms, so you have to pick one of the small 74 chips instead.. and it's risky as hell.

I metered ours to 5.10V at said input chips. you can't go based on what the voltage is at the power supply or even the filter board, there's just too much power loss along the way to accurately measure it.

if the voltage goes too low, the game can black out, or certain graphical elements will be missing. if you want to take a quick and easy route, follow the wiring from the power supply to the small board it plugs into and test at the yellow (+5, yellow on Sega stuff) and white (ground, ground is white in Sega land lol) and just turn it up about 0.1 V and see if the problem disappears.

I've never heard of the "other games on the circuit" thing, as that's exactly how all our games are at work.

I would have to agree here as my signature states, VoLtAgEs are one of the first things to check.
 
My circuit theory is based on possibly not getting enough power to the game to operate the power supply and force feedback properly.. Also why i run it on it's own circuit and it works fine there.. But with Pacman, Space Invaders, Burgertime, Baby Pac, Mk2,Mk4 and Afterburner running... Daytona just doesn't work right on that circuit.
 
I've got a buddy in the business that has an issue similar to this, not with a Daytona but a pinball machine. His name is Charlie, owns Joysticks Amusements in downtown Houston, has a row of pins along one wall of his place and when they are all running....well you know they suck up juice. However, it appears that only a few or one pin has a tendency to blackout under the load since his outside transformer is heavy enough for a lock in night, but nothing else in his place does. So honestly its no surprise that running a load of games in one circuit is probably going to cause drop outs on one end possibly.

With the Daytona though i think is that the power supply is not sustaining a load when the GPU and CPU are working harder. Daytona's and model 1/2/3 systems are very picky about 5v, they have to be on the dot and be able to sustain the load because the Model system boards never used more than 5v on the CPU/GPU side so it would draw more than most JAMMA boards. Only in the sound boards were there any other voltages such as 12v.
 
Seems like it was definitely a voltage issue. It was a game that I sold to a friend so I did not have time to read voltage at the boards but at the supply it read 14.8 and 7.5vdc. Surprised it ran at all to be honest. I also adjusted the pot for the steering and now I can access the expert track.
Thanks to all posters!
 
Re: Transformers, outlets, et al....

It isn't the size of the transformer itself that is critical - it's the entire wiring run.

If you have a long run of 14 gauge wire, you will have a voltage drop (regardless of the source voltage). Now add in two power hungry machines, and you get a voltage drop where the weakest of the two will shut down.

There are also the following circuit headache potentials: (the whole list)
1. Too small of wires. 15 amp service being taxed over limits.
2. Aluminum wires tied to copper terminals.
3. Loose wires at the outlet.
4. Loose wires / neutral at the circuit breaker panel.
5. Pinched / crimped wire (rare)
6. Multiple outlets on the same circuit (power drain)
7. In conjunction with 6. above, major load on the circuit elsewhere.
8. Power panel overloaded (100 amp service being over-taxed)
9. Main feed line in overloaded (your neighbor hooked up an inverter, and is running a 240 v AC three phase welder.) (If you see the lights dim, and a strobe / flash effect from one of the neighbors, you might want to strike up a conversation)
10. Amateur Electrical Installation (combinations of the above issues)
11. Shorts. (Rare)

I've seen all of these things over the year. Kjobin is right - always check your power, both INTO the game from the outlet, and INSIDE the game, at the power supply.
 
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